Both Chen Lei and Ding Jianxin were on guard against the next counterattack of the Evil God Cult. The commander of Bailian City also attached great importance to Mudao Gorge and dispatched a large number of masters to garrison in Mudao Gorge to ensure that nothing could go wrong.
Chen Lei was practicing wholeheartedly in a deep valley in Mudao Gorge.
These days, Chen Lei has devoted most of his energy to cultivation. Unfortunately, he still has no way to break through to the Nascent Soul stage. The Dan Yuan power in his body is already extremely pure, and no matter how he cultivates, it will be difficult to purify it further.
In this case, Chen Lei had to find a way to increase the total amount of Dan Yuan Power. With the Tower of All Things absorbing and refining the spiritual energy of heaven and earth, the total amount of Chen Lei's Dan Yuan Power increased at an astonishingly fast rate. Over the past few months, Chen Lei's Dan Yuan Power also reached a bottleneck and could no longer increase.
At this point, if Chen Lei does not break through to the Nascent Soul Realm, no matter how he practices, he will not make the slightest improvement, because he has reached the biggest bottleneck in the Yuandan Realm. If he does not break through the bottleneck, he will never be able to improve.
Chen Lei knew that it was meaningless to continue practicing hard.
Afterwards, he came out of the valley, released his mind, and observed the situation in Mudao Gorge.
In a trance, Chen Lei seemed to see a shocking knife light across the sky, splitting a huge mountain into two. The cut surface was as smooth as a mirror.
Chen Lei's heart suddenly felt cold. The blade light was so terrifying that it was indestructible. It made him feel as if he was about to die. He was terrified.
This was just an illusion. After a moment, Chen Lei regained his consciousness and saw the green valley in front of him. The terrifying knife light had disappeared.
"What's going on? Is there really another cave in this Mudao Gorge?"
Chen Lei became interested and thought of the legend of Mudao Gorge. Perhaps there really was some rare opportunity in this Mudao Gorge.
For the next period of time, Chen Lei walked all over the Mudao Gorge, carefully looking for the feeling he had the previous time.
And Chen Lei did gain something in the Mudao Gorge. He felt the shocking sword energy in several places. Of course, this shocking sword energy was just the mark left by the peerless strong man who swung his sword countless years ago.
"This Qi-refining technique is called Kai Tian, and I will leave it to those who are destined to receive it."
On this day, when Chen Lei was continuing to search for that strange feeling in Mudao Gorge, he suddenly saw a tall and stern figure carving a Qi-refining technique on a stone wall and then left.
Chen Lei's vision regained clarity, and he discovered that this scene was just a mark left here before.
"It is incredible that there is an extremely powerful Qi Refining Technique here."
Chen Lei was extremely surprised. He saw the mark left by the strong man before, and left a legacy in Mudao Gorge.
"We must find this Qi Refining Technique."
Chen Lei said to himself in his heart that he had a hunch that if he could obtain this Qi Refining Technique, perhaps his Tower of All Things would be able to be cultivated to the ninth level, reaching perfection and thus breaking through to the Nascent Soul stage.